scanf() returns -1 on early input error.
-rw-r--r-- 6818 Makefile
-rw-r--r-- 5047 Notes.txt
-rw-r--r-- 8450 Readme.txt
drwxr-xr-x - functions
drwxr-xr-x - includes
drwxr-xr-x - internals
drwxr-xr-x - platform